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...where a bunch of geeks got together to make other people's ideas come to life.
This board is a compact (0.5″ × 0.8″) breakout board for ST’s LSM303DLHC 3-axis accelerometer and 3-axis magnetometer. The LSM303DLHC is a great IC, but its small package makes it difficult for the typical student or hobbyist to use. It also operates at voltages below 3.6 V, which can make interfacing difficult for microcontrollers operating at 5 V. This carrier board addresses these issues by incorporating additional electronics, including a 3.3 V voltage regulator and level-shifting circuits, while keeping the overall size as compact as possible. The board ships fully populated with its SMD components, including the LSM303, as shown in the product picture.
The LSM303 has many configurable options, including dynamically selectable sensitivities for the accelerometer and magnetometer, a choice of output data rates, and two independently-programmable external inertial interrupt pins. The magnetometer and accelerometer can be individually turned on and off to save power. The six independent magnetic and acceleration readings (sometimes called 6DOF) are available through an I²C/TWI interface and can be used for many applications, including making a tilt-compensated compass that can be used to determine headings regardless of how the board is inclined.
Arduino Library for the LSM303 can be found here.